SEOUL, Oct. 4 (Yonhap) -- South Korea's top diplomat on Thursday stressed the need for flexibility in denuclearization talks with North Korea, as her American counterpart plans to visit Pyongyang this weekend.

Foreign Minister Kang Kyung-wha cited lessons from past negotiations with the North, which eventually failed to curb the secretive nation's nuclear program.

"I think the U.S. is open to some flexibility, although details will depend on negotiations going forward," she said at a press conference.

Pompeo plans to visit Pyongyang on Sunday and meet with the North's leader Kim Jong-un.

The two sides are in consultations to arrange additional bilateral summit talks.

Kang pointed out that the North has stated its willingness to permanently shut down its key nuclear complex in Yongbyon.

She suggested that the United States join the move to declare a formal end to the 1950-53 Korean War in return for Pyongyang's verified closure of the facilities.

Washington can receive an inventory of the North's nuclear weapons later on, rather than sticking to that goal, which is more difficult to achieve, before the end-of-war declaration.

SEOUL, Oct. 4 (Yonhap) -- South Korea's top diplomat on Thursday stressed the need for flexibility in denuclearization talks with North Korea, as her American counterpart plans to visit Pyongyang this weekend.

Foreign Minister Kang Kyung-wha cited lessons from past negotiations with the North, which eventually failed to curb the secretive nation's nuclear program.

"I think the U.S. is open to some flexibility, although details will depend on negotiations going forward," she said at a press conference.

Pompeo plans to visit Pyongyang on Sunday and meet with the North's leader Kim Jong-un.

The two sides are in consultations to arrange additional bilateral summit talks.

Kang pointed out that the North has stated its willingness to permanently shut down its key nuclear complex in Yongbyon.

She suggested that the United States join the move to declare a formal end to the 1950-53 Korean War in return for Pyongyang's verified closure of the facilities.

Washington can receive an inventory of the North's nuclear weapons later on, rather than sticking to that goal, which is more difficult to achieve, before the end-of-war declaration.